Ritsu was the main reason for Kanade and Kyoya entering Seiso Gakuen. When Ritsu was younger, he decided on his own to leave his hometown and enter Seiso Academy where he could learn more about the violin. He tells Kyoya that if he ever stayed back at their hometown, he wouldn't be able to progress much, as he wanted to know more about the world of music, and the need to face more difficult and challenging rivals, leaving Kyoya and Kanade behind.